Transfer mechanism for looms



July 9, 1940.

J. STUER 2,207,07

TRANSFER MECHANISM FOR LOOMS Filed Jan. 12, 1939 4 Sheets-Sheet 1 y 9. 1940. J. STUER' 2,207,073

TRANSFER MECHANISM FOR- LOOMS Filed Jan. 12, 19s9 4 Sheets-Sheet 2 Jy 9, 1940. J. STUER TRANSFER MECHANISM FOR LOOMS Filed Jan. 12, 1939 4 Sheets-Sheet 5 TRANSFER MECHANISM FOR LOOMS Filed Jan. 12, 1959 4 Sheets-Sheet 4 bse zziz/ 8W, by Y #11222;

Patented July 9 1940 UNITED STATES PATENT or ies 7 Claims.

This invention relates to transfer mechanism for looms and more particularly to such a mechanism employing a load actuated dog arranged in its normal position to be engaged by the lay and efiect transfer of a bobbin and a load actuated thread cutter arranged in its normal position to cut the thread of the exhausted bobbin. In accordance with my invention I provide a latch or trigger mechanism for holding the dog and cutter in their inoperative positions against the action of a spring or equivalent means which operates normally to throw the same to the operative positions. The latch is placed under the control of a feeler and the arrangement is such that when the feeler feels an exhausted bobbin it functions through suitable mechanism to release the latch whereby permitting the loaded dog and cutter to move to operative positions whereupon transfer of a full bobbin from a battery to the shuttle in lieu of the exhausted bobbin is efiected and the thread to this bobbin is cut.. The production of such an improved mechanism for looms comprises the primary ob- J'ect of the invention.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings in which, Fig. 1 is an end elevation of a loom embodying my invention,

Fig. 2 is a wiring diagram of the feeler circuit.

Fig. 3 is an enlarged end elevation of the transfer mechanism as illustrated in Fig. 1,

Fig. 4 is a like view with the parts in the transferring position,

Fig. 5 is an elevation of the opposite end thereof and showing the thread cutter withdrawn,

1 Fig. 6 is a like view showing the thread cutter in operative position,

Fig. 7 is a sectional view taken on line 1| of Fig. 6,

Fig. 8 is a side elevation of the same mechanism.

Referring more particularly to the drawings by reference characters, l indicates a loom side of the frame on which is pivotally mounted a lay l2 carrying a shuttle box It at each end thereof, the lay being drivenfrom shaft l through a crank and link connection l6.

Mounted on the frame rearwardly of the link is a feeler l8 adapted to'f eel for an exhausted bobbin as the lay approaches rear center, all as more specifically described in Patent No. 2,166,071 to McCann and Stuer. The feeler illustrated is of the electric contact type and is in circuit with a solenoid and a normally open switch 22. The shuttle boxes are mounted for vertical movement and are elevated to their different positions by box chains 24. It is essential that the transferring of a bobbin shall take place only when the 5 shuttle boxes are in the proper predetermined position in which position (Fig. 1) a stud 26 on the box chain holds the switch 22 closed.

Mounted on the frame above the shuttle box :10 I4 is a bobbin battery 28. Cooperating with the battery is a transfer arm 30 carried on a shaft 32, a spring 34 operating on the arm to normally hold it in the raised position of Fig. 3. Also integral withthe arm 30 is a downwardly extending u arm 36 having a dog 38 pivoted thereto at All, the dog having operative and inoperative positions and in the former position being in the path of movement of a bunter 62 carried by the shuttle box on the lay. The dog is adapted to be held up 2 in the operative position shown in Fig. 3 by an arm 44 carried loosely on the shaft 32 and engaging a pin 46 carried by the dog. A spring 48 on the shaft normally moves the arm 44 and dog to this operative position.

Mounted for pivotal movement on a shaft 50 is a lever 52 carrying a thread cutter at its free end, the cutter having fixed and movable blades 53 and 54. The lever 52 is integral with two other levers or arms 56 and 58, and a link 60 30 connects the lever 55 with an arm 62 integral with the arm M. Through such connection the spring 48 serves normally to swing the lever 52 to the position of Fig. 3.

The arm '44 andlever 52 are adapted to be held in their inoperative positions (Fig. 5) against the action of the spring 68 by a trigger latch 64 pivoted at 66 and engaging the arm 58. The armature 68 of the solenoid 20 is connected by a link 10 to the rear end of the latch. Energizing 1 of the solenoid under the action of the feeler I8 is adapted to release the latch whereupon the spring 48 moves the dog 38 and the cutter 53-54 to the operative positions of Fig. 6, to the limit of movement permitted by a stop 12. Upon forward movement of the lay the bunter 42 engages the dog and rocks the transfer arm 30 tothe position of Fig. 4 thereby substituting a full bobbin from the battery for the exhausted bobbin in the shuttle box. As the lever 52 moves to the position of Fig. 6 a pin 14 on the movable blade- 54 engages a hook l6 and swings this blade to the open position whereby to catch the thread between the blades. Upon subsequent forward movement the lay engages an inclined surface 18 and moves the blade 56 to sever the thread in the manner well known in the art,

The bobbin transferring action is illustrated in Fig. 4 and it will be apparent that such action not only causes transferring of the bobbins and cutting of the thread, but also resets the parts to the latched position of Fig. 5. Forward movement of the lay causes the pin it to engage the arm 44 and rock the same in a direction winding up the spring 48. Through the link 60 the latch arm 58 is also thereupon moved to the position of Fig. 4 wherein it is engaged by the latch 6d, the dog 38 and the thread'cutter being thereby reset glild lgeld to the inoperative position illustrated in Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is,

1. In a loom, a lay, lay, a thread cutter mounted for movement to position and reset the spring to said abnormal and latched condition by movement of the lay upon release of the latch and the thread cutting operation.-

2. In a loom, a bobbin magazine, a transfer arm cooperating therewith, a lay, a pivotally mounted dog cooperating with the transfer arm, loaded means including a spring remote from and means under releasing the latch and permitting the loaded means to move the dog to the operative position.

3. In a loom, a bobbin magazine, a pivotally mounted transfer arm cooperating therewith, a lay, a dog cooperating with the transfer arm, loaded means including a spring and also an arm pivotally mounted co-axially of the transfer arm pivot for moving the dog to the operative position wherein it will be engaged by the lay to cause bobbin transfer movement of the transfer arm, a latch for retaining the loaded means in position rendering the dog inoperative relative to the lay, a weft feeler, and means under the control of the feeler for releasing the latch and permitting the loaded means to move the dog to the operative position, the second named arm being arranged to be operated by the lay when said transfer is effected to reset the loaded means and the dog to the latched and inoperative position.

4. In a loom, a bobbin magazine, a shaft, a transfer arm mounted for pivotal movement on the shaft and cooperating yith the magazine, a downwardly extending arm cooperating with the transfer arm at the shaft, a dog pivotally hung to the downwardly extending arm and normally located by gravity in' an inoperative position relative to the lay, a third arm mounted for pivotal movement on the shaft and cooperating with the dog, a spring for normally pivoting the third arm on the shaft in a direction pivoting the dog from the inoperative to the operative position wherein it will be engaged by the lay to cause bobbin transfer movement of the transfer arm, a latch positioned to resist the spring and leave the dog in the inoperative position, a weft feeler, and means under the control of the feeler for releasing the latch and permitting the spring and third arm to move the dog to its operative position, movement of the dog by the lay being adapted to reversely pivot the third arm to its latched position.

5. In a loo'm, a bobbin magazine, a transfer arm cooperating therewith, a lay, a dog cooperating with the arm and having operative and inoperative positions relative to the lay, a thread cutter mounted for movement to operative and inoperative positions, loaded means for moving the dog to the operative position wherein it will be engaged by the lay to cause bobbin transfer movement of the arm and for moving the cutter to the operative position wherein it is adapted to cut the thread of an exhausted bobbin, a latch operative on the loaded means to retain it in position wherein the dog and cutter are in said inoperative positions, a weft feeler, and means under the control of the feeler for releasing the latch to permit the loaded means to move the dog and thread cutter to said operative positions, the loaded means including m'echanism adapted to be operated by the lay through the dog when said transfer is efieoted to reset the loaded means and cutter to the latched position. I

6. In a loom, a bobbin magazinega pivotally mounted transfer arm cooperating therewith, a, lay, a dog cooperating with the arm and having operative and inoperative positions relative to the lay, a thread cutter, a lever carrying the cutter and pivotally movable to place the cutter in operative and inoperative positions, loaded means including mechanical connections to and between the dog and the lever for moving the dog to the operative position wherein it will be engaged by the lay to cause bobbin transfer movement of the arm and for moving the lever to sale operative position wherein the cutter is adapted to cut the thread of an exhausted bobbin, a latch operative on the loaded means to retain it in position wherein the lever and dog are in the inoperative positions, a weft feeler, and means under the control of the feeler for releasing the latch, the loaded means including the mechanical connections to and between the dog and lever serving to reset them to the inoperative position upon movement of the transfer arm when transfer is efiected at which position the latch re-engages in its said retaining position.

7. In a loom, a bobbin magazine, a transfer arm cooperating therewith, a lay, a dog coopcrating with the transfer arm, loaded means including a spring and also an arm actuated by the spring and operative on the dog to move the dog to the operative position wherein it will be engaged by the lay and cause bobbin transfer movement of the transfer arm, the dog normally feeler, meam under the control of the Ieeler for releasing the latch and permitting the loaded means to move the dog to the operative position, a thread -cutter mounted for movement to operative and inoperative positions, and means connecting the thread cutter to the spring actuated arm in such relation that the latch also holds the thread cutter in the inoperative position and movement of said arm by the spring upon releasing of the latch moves the thread cutter to its operative position.

- JOSEPH STUER. 

